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Topic: Arduino GPRS shield caught fire (Read 10309 times) previous topic - next topic

As there are no recent posts on this interesting theme, I have to say that the GSM shield  recently bought, has a zener diode soldered in parallel to the problematic capacitor. So, I think this kinda solve the problem.
If you are not prepared to be wrong, you would never come up with something original!

Would love to see a pic from this new board. Any Specs to the diode?

Best regards

Hi,

sorry for this late response.
Here https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRsx7i6S0QzynAEEK6EIvl_opmtTw4mfAHcTQHte_XGUloDbfUdVQ you could find a photo of this zener diode soldered in parallel of the tantalum cap.
Tonight, when I get back home, I will check again what was the exact number of the diode and will post here it's data sheet.

Regards,

Erik
If you are not prepared to be wrong, you would never come up with something original!

Hi again!

I am looking now at my GSM shield.
Just to make clear something, this is not a new board, I mean generally. There is just this zener diode added to overcome this design flaw.
Here http://www.futurlec.com/Diodes/1N5338B.shtml, you can check its characteristics.
The diode is 1N5338b.

Regards,

Erik
If you are not prepared to be wrong, you would never come up with something original!

Ahh, this info helps a lot. Would you mind to take a pic from your shield? The pic you posted is so small.

Best regards
toonlumberjack

#50
Mar 24, 2014, 06:50 pm Last Edit: Mar 24, 2014, 08:21 pm by ErikDimitrov Reason: 1
Sure,

an image is attached.  :)

Regards,

Erik
If you are not prepared to be wrong, you would never come up with something original!

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